GOP Sen. Markwayne Mullin's confirmation hearing began with a personal confrontation between fellow Republican Sen. Rand Paul as Mullin seeks to take over the Department of Homeland Security from its embattled leader, Kristi Noem. ABC News’ Jay O’Brien breaks down the heated moment and where the votes stand for Mullin’s confirmation. #MarkWayneMullin #RandPaul #Senate #News #DHS #Politics